According to one study, 50 percent of second-hand mobile phones sold on eBay come to its new owner with previous information from photos to bank data.

One of the technological fears ordinary user is that no matter how hard you try, the data is not deleted from the computers with the guarantee of never able to recover. But perhaps we should extend this concern to mobile, especially if we are to sell.

Text messages, notes, agendas ... all that can store a phone, which is a lot.

The study did Disklabs security experts, they found phone numbers Call records 60 percent of surveyed mobile. http://mobile-phone-telefono-movil.blogspot.com/

Another thing not uncommon, apparently, is to leave the pileup without erase pornographic content, which appeared in 9 out of 50 phones reviewed. Nine had video or data in the calendar, and what is worse, 26 mobile home containing the address, passwords or credit card.

Best to avoid shocks is not simply hit the option to "delete" and reset the phone returning to its factory settings, not forgetting to remove or review applications, starting with social networks, email systems and other full service personal information.